Magnesium-containing electrode, method for fabricating the same, and electrochemical device

Patent metadata

Field	Value
Publication number	US-2022037641-A1
Application number	US-202117505261-A
Country	US
Kind code	A1
Filing date	Oct 19, 2021
Priority date	Apr 19, 2019
Publication date	Feb 3, 2022
Grant date	—

Abstract

Provided is a method for fabricating a magnesium-containing electrode by a plating method. In the fabrication process disclosure, a plating solution used in the plating method includes a solvent containing an ether. The solvent includes a first magnesium salt having a disilazide structure represented by a formula (R 3 Si) 2 N and a second magnesium salt that does not have a disilazide structure. In the formula, R represents a hydrocarbon group having 1 or more and 10 or less carbon atoms.

First claim

1 . A method for fabricating a magnesium-containing electrode for an electrochemical device, comprising:
fabricating the magnesium-containing electrode by a plating method, wherein a plating solution used in the plating method includes a solvent containing an ether, and the solvent includes a first magnesium salt having a disilazide structure represented by a formula (R 3 Si) 2 N, and a second magnesium salt that does not have the disilazide structure, and wherein R represents a hydrocarbon group having 1 or more and 10 or less carbon atoms.

2 . The method for fabricating a magnesium-containing electrode for an electrochemical device according to claim 1 , wherein the second magnesium salt includes at least two kinds of salts.

3 . The method for fabricating a magnesium-containing electrode for an electrochemical device according to claim 2 , wherein the two kinds of the second magnesium salts include a metal halide salt and a metal imide salt.

4 . The method for fabricating a magnesium-containing electrode for an electrochemical device according to claim 1 , wherein the R in the disilazide structure represents an aliphatic hydrocarbon group having 1 or more and 10 or less carbon atoms.

5 . The method for fabricating a magnesium-containing electrode for an electrochemical device according to claim 1 , wherein the R in the disilazide structure represents a lower alkyl group having 1 or more and 4 or less carbon atoms.

6 . The method for fabricating a magnesium-containing electrode for an electrochemical device according to claim 1 , wherein the first magnesium salt includes magnesium bis(hexamethyldisilazide).

7 . The method for fabricating a magnesium-containing electrode for an electrochemical device according to claim 3 , wherein the metal halide salt includes magnesium chloride.

8 . The method for fabricating a magnesium electrode-containing for an electrochemical device according to claim 3 , wherein the metal imide salt includes a magnesium salt of perfluoroalkylsulfonylimide.

9 . The method for fabricating a magnesium-containing electrode for an electrochemical device according to claim 2 , wherein the two kinds of the second magnesium salts include magnesium chloride and magnesium bis(trifluoromethanesulfonyl)imide.

10 . The method for fabricating a magnesium-containing electrode for an electrochemical device according to claim 1 , wherein the ether includes a linear ether.

11 . The method for fabricating a magnesium-containing electrode for an electrochemical device according to claim 10 , wherein the linear ether is represented by following formula:

wherein R′ and R″ each independently represent a hydrocarbon group having 1 or more and 10 or less carbon atoms, and n is an integer of 1 or more and 10 or less.

12 . The method for fabricating a magnesium-containing electrode for an electrochemical device according to claim 11 , wherein the R′ and the R″ each independently represent a lower alkyl group having 1 or more and 4 or less carbon atoms.

13 . The method for fabricating a magnesium-containing electrode for an electrochemical device according to claim 1 , wherein magnesium is precipitated on a metal material to form a magnesium foil on the metal material and the magnesium-containing electrode includes the metal material and the magnesium foil.

14 . The method for fabricating a magnesium-containing electrode for an electrochemical device according to claim 1 , wherein a granular precipitate is obtained as a magnesium precipitate in the plating method.

15 . The method for fabricating a magnesium-containing electrode for an electrochemical device according to claim 14 , wherein the granular precipitate has a geometric shape.

16 . The method for fabricating a magnesium-containing electrode for an electrochemical device according to claim 1 , wherein the plating method is electroless plating.

17 . The method for fabricating a magnesium-containing electrode for an electrochemical device according to claim 1 , wherein the electrochemical device is a magnesium secondary battery.

18 . A magnesium-containing electrode for an electrochemical device,
Wherein the magnesium-containing electrode comprising a magnesium foil including a granular magnesium precipitate.

19 . The magnesium-containing electrode for an electrochemical device according to claim 18 , wherein the granular magnesium precipitate has a geometric shape.

20 . The magnesium-containing electrode for an electrochemical device according to claim 18 , wherein the magnesium foil is provided on a metal material, and wherein the metal material includes an electrode current collecting section.

Assignees

• Murata Manufacturing Co

Inventors

• Matsumoto Ryuhei
• Nakayama Yuri
• Kawasaki Hideki

Classifications

• Y02T10/70

  Energy storage systems for electromobility, e.g. batteries · CPC title

• H01M12/08

  composed of a half-cell of a fuel-cell type and a half-cell of the secondary-cell type · CPC title

• H01M4/134 Primary

  Electrodes based on metals, Si or alloys · CPC title

• H01M4/0452

  from solutions · CPC title

• H01M4/0404

  by coating on electrode collectors · CPC title